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404 N WI.Set Lane <br /> Sequoia Walnut Creek CA 94598 <br /> (925)988-9600 <br /> FAX(925)98&9673 <br /> Analytical www <br /> �11� <br /> Gettler Ryan,Inc -Dublin Project Chevron <br /> 6747 Sierra Court Suite J Project Number Chevron#9-6171 Reported <br /> — -Dublin CA,-94568 Project Manager-Deanna L Harding 06-Mar-01-12 03— T <br /> Total Purgeable Hydrocarbons (C5-Cl2),BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical - Morgan Hill <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Lunt Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1B28002-EPA 5030B iP/T} <br /> Blank(1B28002-BLKI) Prepared&Analyzed 28-Feb-01 <br /> Purgeable Hydrocarbons ND 500 ug/l <br /> Benzene ND 0 500 " <br /> Toluene ND 0 500 " <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) - ND 0 500 " <br /> Methyl Cert-butyl ether ND 250 " <br /> Surrogate qa,a-Tnfluorotoluene 967 100 967 70-130 _ <br /> LCS(IB28002-BS1) Prepared&Analyzed 28-Feb-01 <br /> Purgeable Hydrocarbons 252 500 ug/1 250 101 70-130 <br /> Surrogate a,a a-Tri luorotoluene 990 100 990 70-130 <br /> Matrix Spike(IB28002-MS1) Source NlIM775-11 Prepared&Analyzed 28-Feb-01 • <br /> Purgeable Hydrocarbons 227 500 ug/I 250 ND 908 60-140 <br /> Surrogate a a a-Tnfluorotoluene 940 11100 940 170-130 <br /> Matrix Spike Dup(1B28002-MSD1) Source MKB0775-11 Prepared&Analyzed 28-Feb-01 <br /> Purgeable Hydrocarbons 219 So 0 ug/I 250 ND 876 60-140 3 59 25 <br /> Surrogate aaa-Tnfluorotoluene 855 " y 100 855 70-130 - <br /> t <br /> Sequoia Analytical -Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its enti <br /> Page 9 of 11 <br />